I've not heard any news about another run of Danger Zone, but it could happen if there was sufficient demand. But of course that demand would have to surpass the projected demand for new sets that are being proposed.
It is worth noting that double-shot sets from SP are currently booked through June of next year, so even if a second round of Danger Zone was put up on MassDrop as soon as January, it wouldn't get queued for production until late summer at the earliest.